How is a city legally defined in the u. s.?
a. a collection of densely populated neighborhoods
b. an urban cultural center
c. a densely populated area with natural geographic boundaries
d. an urban unit with clear boundaries and a degree of autonomy

Which of the following is not true of the xiongnu empire? burial mounds included glass beads and mirrors made from the sands throughout the region. there was more cooperation through trade between the tribes. other tribal units that were eventually assimilated were indo aryan, xianbei, hunyu, scythina and han chinese. as each nomadic tribe and civilization was conquered or absorbed into the larger empire, the xiongnu were able to hold more territory.